Sight-feed for lubricators.



PAIBNTED .TUNE 12, 1906.

.,I. A. ERICKSON.

SIGHT FEED FOR LUBRIGATORS.

APPLIUATION FILED MAILS, 1906.

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NITEI) STATES PATENT OFFICE.

SIGHT-FEED FOR LUBRICATORS.

specification of Letters Patent.

Patented June 12, 1906.

Application led March 5, 1906. Serial No. 304.179.

To all' whom it may concern:

Be it known that I, JOHN A. ERICKSON, a citizen of the United States, residing at Malden, county of Middlesex, and State of Massachusetts, have invented an Improvement in Sight-Feeds for Lubricators, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on the drawings representing like parts.

This invention relates to lubricators, and

especially to the type known as force-feed7 lubricators, and its principal object is to so arrange the parts that the sight-tube will be situated in a pipe which is constantly filled with water so cool as to prevent the oil in passing through the sight-tube from emulsifymg- In accordance with my mventlon I provide the oil-supply pipe which connects the pump or forcing mechanism to the steammain with an enlarged chamber and place the sight-tube in said oil-supply pipe between the chamber and the forcing mechanism and a sufiicient distance from the chamber so that the oil will not be heated, and I also connect said chamber, preferably at its side, with the steam-main by means of another pipe. The last-named pipe and the portion of the oil-supply pipe between the chamber and the steam-main constitutes a by-pass in which condensation water accumulates. The water in the pipes between the chamber and steammain is at a more or less elevated temperature but the water which accumulates in the oil-supply pipe between said chamber and the forcing mechanism does not circulate at all and remains cool, and as the sight-tube is situated between said chamber and the forcing mechanism the oil does not become emulsied while passing through the sight-tube.

With my improvement, therefore, the sighttube is always clear and transparent.

In the drawings, Figure 1 is a view showing the general arrangement of parts of my improvement; and Fig. 2 is a section on the line x, Fig. 1

3 designates the steam-main which leads from the boiler or other source of steam-supply to the Aengine or other mechanism to be operated by the steam. 9 designates an oilsupply pipe which connects the steam-main 3 with the forcing mechanism or pump (not shown) by which the oil is forced into the steam-main. Situated in the oil-supply pipe 9 is a chamber 4, in the bottom and top of which the said pipe 9 enters. For convenience I have designated the portion of the pipe 9 between the chamber 4 and the steammain by the reference-numeral 7, said pipesection 7 communicating with the steammain at 8. 5 designates another pipe which communicates with the steam-main at 6 and also communicates with one side of the chamber 4. The pipe 5 and the pipe-section 7 form a sort of by-pass, and as steam enters said pipes it will gradually condense until the water of condensation fills the pipe 9, chamber 4, and the pipe-sections 5 and 7 up to about the level of the line a b. 10 designates a sight-tube which is situated in the oil-supply pipe 9 between the chamber 4 and the forcing mechanism.

While the engine is running and oil is being delivered to the steam-main 3 there will be a slow circulation of water through the pipes 5 and 7 and the chamber 4, as indicated by the arrows in Fig. 1. The water thus circulating will of course be very hot; but since the sighttube 10 is situated entirely below the chamber 4 this circulation of hot water does not affect the temperature of the dead water in the oil-upply pipe 9, which remains perfectly coo In sight-feeds for lubricators that I am familiar with the sight-tube is so arranged that the hot water of condensation circulates therethrough. When this occurs, the oil becomes more or less emulsified and the sighttube becomes so clouded that it is impossible to observe properly the amount of oil delivered. This difficulty is entirely overcome by my invention, because the water in the sight-tube is always cool.

The sight-tube may be mounted in any suitable way. I have, however, herein shown it as having its ends received in two holders 14, which are connected by tubular arms 15. The ends of the sight-tube abut against heads 17 to which the sections of the oil-supply pipe 9 are attached, and these heads are clamped together by means of suitable bolts or rods 20, which extend through the tubular arms 15.

21 21 designate packing-rings which'are received between the holders 14 and heads 17 and which form a tight joint around the sight-tube 10. The lower head 17 is provided with the usual nozzle 23.

The baffle-plate 11 prevents the oil from T,1ro

IOO

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is#- 1. In a device ol the class described, a

steam-main, an oil-suppl5T pipe connected thereto, said pipe having an enlarged chamber, another pipe also connected to the steammain and communicating with said chamber, and a sight-tube located in the oil-supply pipe between the chamber and the source ot oil-supply. l 2. In a device of the class described, a chamber, two pipes both connected with the steam-main, one entering the top oi the chamber and the other the side thereof, an oil-supply pipe communicating with the bottom of the chamber, and a sight-tube within the oil-supply pipe and situated some distance below the chamber, said chamber having a transversely-arranged battle opposite the pipe which enters the side thereof.

3. In a sight for a lubricator, two heads, a

sight-tube situated between said heads, one of said heads having anozzle entering one end oi' the sight-tube, a holder surrounding the ends oi' the sight-tube and interposed between the heads, and bolts connecting the heads.

4. In a sight for a lubricator, two heads, a sight-tube situated between said heads, one of said heads having anozzle entering one end oi the sight-tube, a holder surrounding the ends of the sight-tube and interposed between the heads, and bolts connecting the heads, said bolts passing through tubular posts forming part of the holder.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. i

LoUrs C. SMITH, MARGARET A. DUNN. 

